MCQOPTIONS
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| 1. |
Mechanical abrasion counts to how much amount of the material removal in ECG? |
| A. | 1 to 5% |
| B. | 5 to 10% |
| C. | 10 to 15% |
| D. | 15 to 20% |
| Answer» C. 10 to 15% | |